[docs] Normalize the capitalization of Design Kit

docs/data/material/getting-started/design-resources/design-resources.md

@@ -2,7 +2,7 @@
 
 <p class="description">Be more efficient designing and developing with the same library.</p>
 
-## Design kits
+## Design Kits
 
 Material UI component designs are available for Figma, Sketch, and Adobe XD, providing accurate representations using shared terminology for all states, variants, and permutations of each component.
 

docs/pages/blog/2021-q1-update.md

@@ -141,7 +141,7 @@ The date picker is at the border between the advanced components and the design
 
   <img src="/static/blog/2021-q1-update/column-selector.png" alt="" style="width: 518px; margin-bottom: 16px;" />
 
-### Design kits
+### Design Kits
 
 #### Figma
 
@@ -215,7 +215,7 @@ We have the following objectives:
 - 🗓 Execute on all the items in the [public roadmap](https://github.com/mui/mui-x/projects/1).
 - ❓ Please upvote [GitHub issues](https://github.com/mui/mui-x/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc) if you want us to focus on a specific problem. The number of 👍 helps us to prioritize.
 
-### Design kits
+### Design Kits
 
 - Release an update with the new Material Design icons on Figma, Adobe XD, Sketch.
 - Figma, continue to polish the kit as our most important one.

docs/pages/blog/2021-q2-update.md

@@ -15,7 +15,7 @@ It also covers what we aim to achieve in the months ahead.
 - [Product](#product)
   - [Core components](#core-components)
   - [Advanced components](#advanced-components)
-  - [Design kits](#design-kits)
+  - [Design Kits](#design-kits)
 - [Company](#company)
 - [Our roadmap intent for Q3 2021](#our-roadmap-intent-for-q3-2021)
 
@@ -134,7 +134,7 @@ The date picker is at the border between the core component and advanced compone
 - ⚡️ We have fixed support for components that use portals, like Select and Autocomplete, in the cell editing mode.
 - 🌏 We have accepted many new built-in locales (+15) from the community, after the introduction of [the feature](/x/react-data-grid/localization/#supported-locales) in Q1.
 
-### Design kits
+### Design Kits
 
 #### Figma
 
@@ -232,7 +232,7 @@ We have the following objectives:
 - 🗓 Execute on all of the items in the [public roadmap](https://github.com/mui/mui-x/projects/1).
 - ❓ Please upvote [GitHub issues](https://github.com/mui/mui-x/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc) if you want us to focus on a specific problem. The number of 👍 helps us to prioritize.
 
-### Design kits
+### Design Kits
 
 - Handle designers' pain and bug reports to polish the products.
 - Run a survey on thousands of customers to identify important improvement opportunities. Should we build plugins to more easily switch the token variables between design and code? Should we add more in context examples? Should we focus on inconsistencies? etc.

docs/pages/blog/2021-q3-update.md

@@ -15,7 +15,7 @@ It also covers what we aim to achieve in the months ahead.
 - [Product](#product)
   - [MUI Core](#mui-core)
   - [MUI X](#mui-x)
-  - [Design kits](#design-kits)
+  - [Design Kits](#design-kits)
 - [Company](#company)
 - [Our roadmap intent for Q4 2021](#our-roadmap-intent-for-q4-2021)
 
@@ -126,7 +126,7 @@ The date picker sits at the border between the core component and advanced compo
 - Last but not least, we have resumed the work on [key missing features](https://github.com/mui/mui-x/issues?q=is%3Aopen+label%3A%22linked+in+docs%22+sort%3Areactions-%2B1-desc).
   Print export and tree data are in the pipeline.
 
-### Design kits
+### Design Kits
 
 We introduced a brand new [product page](/design-kits/) this quarter to better present the design kits.
 
@@ -223,7 +223,7 @@ No plans. We probably won't progress its development this quarter.
 However, we are growing the team.
 We plan to resume work on it in Q1 2022, starting with the equivalent of one full-time developer.
 
-### Design kits
+### Design Kits
 
 We will release a v5 for Sketch and Adobe XD, as we have already done for Figma.
 While the visual difference between MUI Core v4 and v5 is not major, we still need to sync the design components.

docs/pages/blog/mui-core-v5.md

@@ -49,13 +49,13 @@ This release features some major highlights:
   - [Change of the package names](#change-of-the-package-names)
   - [Change of the styling solution](#change-of-the-styling-solution)
   - [Changes to the supported platforms](#changes-to-the-supported-platforms)
-- [Design kits](#design-kits)
+- [Design Kits](#design-kits)
 - [What's next?](#whats-next)
   - [A public roadmap](#a-public-roadmap)
   - [Unstyled components and hooks](#unstyled-components-and-hooks)
   - [Second design system](#second-design-system)
   - [MUI X](#mui-x)
-  - [Design kits](#design-kits-1)
+  - [Design Kits](#design-kits-1)
 - [Thank you](#thank-you)
 
 ## High-level goals for v5
@@ -660,7 +660,7 @@ This breaking change is an opportunity to drop the support of legacy upstream de
 
 These changes have allowed us to save [6 kB gzipped](https://github.com/mui/material-ui/pull/22814#issuecomment-700995216) on the `@mui/material` package.
 
-## Design kits
+## Design Kits
 
 We now have design kits for the MUI components available in the three main design tools out there: [Figma](https://mui.com/store/items/figma-react/), [Sketch](https://mui.com/store/items/sketch-react/), and [Adobe XD](https://mui.com/store/items/adobe-xd-react/). If you work together with a designer or team of designers, having them use the design kits makes for easier communication, as you'll be speaking the same language around the components. It'll also help designers to understand how the library is structured, especially theming features and each component prop, enabling much faster development.
 
@@ -754,7 +754,7 @@ We still have column pinning, tree data, grouping, pivoting, excel export, and m
 
 Once we would have grown the team and made enough progress, we will expand to a second component.
 
-### Design kits
+### Design Kits
 
 We plan to run extended research and surveys.
 We have already identified that accessibility is something leading companies care about.

docs/pages/careers/full-stack-engineer.md

@@ -16,7 +16,7 @@ It has gained a large following, not only due to its fidelity to Material Design
 Today, countless teams and organizations rely on our open-source projects to build their design system.
 
 A couple of years ago, we started to expand our suite of products.
-We released [MUI X](https://mui.com/x/), a collection of advanced components; [MUI Design kits](https://mui.com/design-kits/), the MUI components available for Figma, Sketch, etc.; and also host [Templates](https://mui.com/templates/), a set of pre-built UI kits.
+We released [MUI X](https://mui.com/x/), a collection of advanced components; [MUI Design Kits](https://mui.com/design-kits/), the MUI components available for Figma, Sketch, etc.; and also host [Templates](https://mui.com/templates/), a set of pre-built UI kits.
 We've seen rapid growth with all of them (2x per year) and we have more to come.
 We are building [a low-code platform](https://mui.com/toolpad/) for developers to significantly increase the speed and lower the barrier for creating simple CRUD/dashboard UIs with MUI's libraries.
 

docs/pages/careers/senior-designer.md

@@ -80,7 +80,7 @@ We imagine a world where design execution is a definitive product differentiator
 
 - Design a new component for one of the MUI Core libraries from scratch in partnership with a developer
 - Design new templates for either Joy UI or Material UI and support their implementation
-- Review new Figma Design kit versions and coordinate their next release
+- Review new Figma Design Kit versions and coordinate their next release
 
 ### What you'll have done in your first year
 

docs/public/_redirects

@@ -538,7 +538,7 @@ https://v4.material-ui.com/* https://v4.mui.com/:splat 301!
 /toolpad/* https://mui-toolpad-docs.netlify.app/toolpad/:splat 200
 /r/toolpad-* https://mui-toolpad-docs.netlify.app/r/toolpad-:splat 200
 
-### MUI Design kits
+### MUI Design Kits
 /figma/getting-started/ /material-ui/design-resources/material-ui-for-figma/ 302
 /r/material-ui-figma-* https://mui-store.netlify.app/r/material-ui-figma-:splat 200
 /r/joy-ui-figma-* https://mui-store.netlify.app/r/joy-ui-figma-:splat 200

docs/src/components/home/ProductsSwitcher.tsx

@@ -116,7 +116,7 @@ export default function ProductsSwitcher(props: {
     <ProductItem
       label="by going to the design-kits page"
       icon={<IconImage name="product-designkits" />}
-      name="Design kits"
+      name="Design Kits"
       description="Bring our components to your favorite design tool."
       href={ROUTES.productDesignKits}
     />,